Paris polyphylla Smith is an important medicinal plant that is considered vulnerable in many parts of the world. The species exhibits poor adaptability to changed environment and susceptible to climatic conditions for...Paris polyphylla Smith is an important medicinal plant that is considered vulnerable in many parts of the world. The species exhibits poor adaptability to changed environment and susceptible to climatic conditions for reproductive vigor. During the present study the species was studied in four different natural niches as well as synthetic habitats to check the adaptability to artificial conditions, its morphological and physiological characters and its interaction in its community so that conservation strategies could be worked out. The present study indicates that P. polyphylla exhibits healthy growth as well as reproduction in undisturbed area with canopy covers over 80%. The plant grows in well-drained rich humus soil and grows well with certain key associated species such as Quercus species, Taxus baccata, Aconitum species, Eupatorium adenophorum, Smilax species etc. Many plants were non-flowering and more than 60% were found non-flowering in its habitat during its flowering season in any particular year. There are clear morphological changes as the flowers stages from pre-fertilization to post-fertilization. Arrangement of anthers in two whorls shows a distinct and unique floral display. Light is an important factor during seed setting and less than 50% shade lowers the seed productivity very significantly. Predators such as slugs and snails are found on the plant. Urgent conservation and new innovative ways are necessary to propagate this economically important plant to ensure its continuity.展开更多
Barberry has played a prominent role in herbal healing for more than 2500 years. Most of the berberis species have medicinal uses because of the presence of alkaloid “berberine” an isoquinoline alkaloid. The root an...Barberry has played a prominent role in herbal healing for more than 2500 years. Most of the berberis species have medicinal uses because of the presence of alkaloid “berberine” an isoquinoline alkaloid. The root and inner bark are also used for yellow dyeing of clothes. The objective of the present study was to evaluate the seed dormancy, effect of stratification, light conditions and planting bed quality on seed germination of berberis manipurana seeds. A set of freshly processed seeds were sowed in three light conditions i.e., normal light (~5000 lux), poly house ca. 50% shade (~2500 lux) and poly house ca. 75% shade (~1250 lux). In the laboratory, half of the collected seeds were packed in plastic bags, labeled and stored at 4°C (stratification treatment);another half was stored at room temperature of 25°C. Stratified seeds from both the conditions (4°C and 25°C) were sowed in the seed bed at 15 days interval till 120th day (0 - 120 days) to check the viability and germination behaviors. Highest germination rate was observed from seeds stored at 4°C, which registered 82.5% (1.5) germination in the poly-bags against 70% (2.5) from seeds stored at 25°C. While 69% (2.0) and 56% (1.5) seeds germinated in the seeds beds from seeds stratified at 4°C and 25°C respectively.展开更多
Panax pseudoginseng Wall., a highly medicinal, herbaceous, long-lived plant, grows in the forest litter of shady primary forest. The species is threatened in the natural habitat due to unsustainable harvesting of rhiz...Panax pseudoginseng Wall., a highly medicinal, herbaceous, long-lived plant, grows in the forest litter of shady primary forest. The species is threatened in the natural habitat due to unsustainable harvesting of rhizome for medicine and habitat destruction. The species has very poor adaptive power to the synthetic environment and fails to grow and propagate. Present study was undertaken to develop suitable low cost propagation technique and produce clonal planting materials through rhizome splitting and root cutting. Rhizomes and roots were cut into segments and sowed in the raised soil bed prepared by mixing decayed wood powder, sand and top black soil at 1:1:3 ratios in a shaded poly house. Of the sowed rhizome segments ~55% segments remained recalcitrant to morphogenetic response in the first year of the study and the response improved in the subsequent years. In the third year ~51% rhizome segments responded positively. The horizontal root cuts mostly remained morphogenetically dormant but inclined root cuts exhibited better response. The morphogenetic response from the roots was comparatively very poor compare to rhizome segments. The plantlets formed both rhizome segments and root cuttings were maintained for three years in the bed/pots followed by transferring in the cultivated plots.展开更多
文摘Paris polyphylla Smith is an important medicinal plant that is considered vulnerable in many parts of the world. The species exhibits poor adaptability to changed environment and susceptible to climatic conditions for reproductive vigor. During the present study the species was studied in four different natural niches as well as synthetic habitats to check the adaptability to artificial conditions, its morphological and physiological characters and its interaction in its community so that conservation strategies could be worked out. The present study indicates that P. polyphylla exhibits healthy growth as well as reproduction in undisturbed area with canopy covers over 80%. The plant grows in well-drained rich humus soil and grows well with certain key associated species such as Quercus species, Taxus baccata, Aconitum species, Eupatorium adenophorum, Smilax species etc. Many plants were non-flowering and more than 60% were found non-flowering in its habitat during its flowering season in any particular year. There are clear morphological changes as the flowers stages from pre-fertilization to post-fertilization. Arrangement of anthers in two whorls shows a distinct and unique floral display. Light is an important factor during seed setting and less than 50% shade lowers the seed productivity very significantly. Predators such as slugs and snails are found on the plant. Urgent conservation and new innovative ways are necessary to propagate this economically important plant to ensure its continuity.
文摘Barberry has played a prominent role in herbal healing for more than 2500 years. Most of the berberis species have medicinal uses because of the presence of alkaloid “berberine” an isoquinoline alkaloid. The root and inner bark are also used for yellow dyeing of clothes. The objective of the present study was to evaluate the seed dormancy, effect of stratification, light conditions and planting bed quality on seed germination of berberis manipurana seeds. A set of freshly processed seeds were sowed in three light conditions i.e., normal light (~5000 lux), poly house ca. 50% shade (~2500 lux) and poly house ca. 75% shade (~1250 lux). In the laboratory, half of the collected seeds were packed in plastic bags, labeled and stored at 4°C (stratification treatment);another half was stored at room temperature of 25°C. Stratified seeds from both the conditions (4°C and 25°C) were sowed in the seed bed at 15 days interval till 120th day (0 - 120 days) to check the viability and germination behaviors. Highest germination rate was observed from seeds stored at 4°C, which registered 82.5% (1.5) germination in the poly-bags against 70% (2.5) from seeds stored at 25°C. While 69% (2.0) and 56% (1.5) seeds germinated in the seeds beds from seeds stratified at 4°C and 25°C respectively.
文摘Panax pseudoginseng Wall., a highly medicinal, herbaceous, long-lived plant, grows in the forest litter of shady primary forest. The species is threatened in the natural habitat due to unsustainable harvesting of rhizome for medicine and habitat destruction. The species has very poor adaptive power to the synthetic environment and fails to grow and propagate. Present study was undertaken to develop suitable low cost propagation technique and produce clonal planting materials through rhizome splitting and root cutting. Rhizomes and roots were cut into segments and sowed in the raised soil bed prepared by mixing decayed wood powder, sand and top black soil at 1:1:3 ratios in a shaded poly house. Of the sowed rhizome segments ~55% segments remained recalcitrant to morphogenetic response in the first year of the study and the response improved in the subsequent years. In the third year ~51% rhizome segments responded positively. The horizontal root cuts mostly remained morphogenetically dormant but inclined root cuts exhibited better response. The morphogenetic response from the roots was comparatively very poor compare to rhizome segments. The plantlets formed both rhizome segments and root cuttings were maintained for three years in the bed/pots followed by transferring in the cultivated plots.
